Ariens st824 gearcase oil seal question - Snowblower Forum : Snow Blower Forums
 
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post #1 of 6 Old 04-20-2015, 01:09 PM Thread Starter
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Ariens st824 gearcase oil seal question

I rebuilt my gearcase, but it would not seal correctly and the impeller would not turn well at all. After trying to set the bushings right to match the inside of the gearcase I realized that the rear oil seal (black o-ring), was causing the problem.

I pulled that seal back on the worm shaft and sealed the gear case. Now the impeller spins freely and it all seems to work right.

Do I need that seal? I can't see alot of grease making its way past the thrust collar and bushing and out the rear of the gearcase in the winter.

I have no problem putting a little grease back in after each season.
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post #2 of 6 Old 04-20-2015, 10:39 PM
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While I've not tore down a gearbox in awhile, I would say YEP -- you'll need that seal, both to keep the grease in, as well as keep the salt/sand/water out....
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post #3 of 6 Old 04-21-2015, 10:50 AM Thread Starter
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Quote:
Originally Posted by gsnod View Post
While I've not tore down a gearbox in awhile, I would say YEP -- you'll need that seal, both to keep the grease in, as well as keep the salt/sand/water out....
Thank you for the advice, I might try to put it back into the gearcase again. But honestly, it might not be an option. I could get it to close right with the seal and I can't replace it without removing the worm shaft from the impeller.

So I think I am done, I will push the seal to the back of the gearcase and hope for the best, I have hit my limit and just want to put the machine back to together again.
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post #4 of 6 Old 04-21-2015, 05:10 PM
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When Everything is lined up, it Will close and seal. Be Patient, and try again.
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post #5 of 6 Old 04-25-2015, 02:16 PM Thread Starter
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When Everything is lined up, it Will close and seal. Be Patient, and try again.
Ok, you were right, it took a third or fourth try but I got lucky and it worked. The seal is now back in the gearcase and its spinning feely.

What a job. I had to replace the bronze gear, remove the old grease. I had to heat up the thrust collar to get it loose so I could remove the broken shear-proof pin in the worm shaft. I can see why the guy sold me this machine and why broken gearcases cost so much to fix in labor.

Now I can put this machine back together, thank you everyone who helped along the way.
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post #6 of 6 Old 04-25-2015, 02:17 PM Thread Starter
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And if someone needs help with a gearcase on a st824, I am happy to answer some questions.
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